Evaluate
\frac{1991}{1990}\approx 1.000502513
Factor
\frac{11 \cdot 181}{2 \cdot 5 \cdot 199} = 1\frac{1}{1990} = 1.000502512562814
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\frac{1990}{1990}+\frac{1}{1990}
Convert 1 to fraction \frac{1990}{1990}.
\frac{1990+1}{1990}
Since \frac{1990}{1990} and \frac{1}{1990} have the same denominator, add them by adding their numerators.
\frac{1991}{1990}
Add 1990 and 1 to get 1991.
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